The cat animation looks awesome. Key-frames all look quite nice, with some nice line of action and stretching going on. At the end it seems a bit unnatural how the paws come off the ground and the cat leans back. The movement feels backwards, like the arms should be staying still and the bottom of the cat comes forward to balance out the pose (if that makes sense).

Pretty cool though man. I'm interested in seeing what else you can do with Flash.